Looking for keeper to match

A handy person from Middlefield Connecticut says:
This may be from a Harvey sliding door. According to the measurements it looks like it may match up to a 82-249 keeper. There is a patent number on the lock that is 5820.170. Would like to know if you think this keeper is the one to order. Thanks
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Casey from SWISCO responded:

Hello,

Your mortise lock resembles our 82-239, which is in fact compatible with the 82-249 keeper you've picked out. Take a look and see how the dimensions compare to your original hardware. Thank you!

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